package com.ruoyi.smart.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
public class ExecutorConfig {

    private static final Logger logger = LoggerFactory.getLogger(ExecutorConfig.class);

    private int corePoolSize = 10;
    private int maxPoolSize = 100;
    private int queueCapacity = 50;
    private String namePrefix="excelBDishes_2004A_";

    @Bean(name="taskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor(){

        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();

        //配置核心线程数：正式员工
        executor.setCorePoolSize(corePoolSize);
        //配置最大线程数:  正式员工 + 外包员工
        executor.setMaxPoolSize(maxPoolSize);
        //配置队列大小： 任务数量
        executor.setQueueCapacity(queueCapacity);
        //配置线程池中的线程的名称前缀
        executor.setThreadNamePrefix(namePrefix);
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
        //拒绝 策略
        //CallerRunsPolicy
        //AbortPolicy  抛弃，并抛出异常
        //DiscardPolicy 抛弃任务，不抛出异常
        //DiscardOldestPolicy 抛弃队列中时间最久的任务
        executor.setRejectedExecutionHandler(
                new ThreadPoolExecutor.CallerRunsPolicy());
        //执行初始化
        executor.initialize();
        return executor;
    }
}
